21353580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1223}}^1$

素因数の和:1335

約数の個数: 72

約数和(自身を含む): 65493792

約数和(自身を除く): 44140212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1223, 1455, 1746, 1940, 2446, 2910, 3492, 3669, 4365, 4892, 5820, 6115, 7338, 8730, 11007, 12230, 14676, 17460, 18345, 22014, 24460, 36690, 44028, 55035, 73380, 110070, 118631, 220140, 237262, 355893, 474524, 593155, 711786, 1067679, 1186310, 1423572, 1779465, 2135358, 2372620, 3558930, 4270716, 5338395, 7117860, 10676790, 21353580]

約数ペア:

[(1, 21353580), (2, 10676790), (3, 7117860), (4, 5338395), (5, 4270716), (6, 3558930), (9, 2372620), (10, 2135358), (12, 1779465), (15, 1423572), (18, 1186310), (20, 1067679), (30, 711786), (36, 593155), (45, 474524), (60, 355893), (90, 237262), (97, 220140), (180, 118631), (194, 110070), (291, 73380), (388, 55035), (485, 44028), (582, 36690), (873, 24460), (970, 22014), (1164, 18345), (1223, 17460), (1455, 14676), (1746, 12230), (1940, 11007), (2446, 8730), (2910, 7338), (3492, 6115), (3669, 5820), (4365, 4892)]